64223613 has 24 divisors (see below), whose sum is σ = 97156800. Its totient is φ = 40803840.

The previous prime is 64223609. The next prime is 64223617. The reversal of 64223613 is 31632246.

64223613 is a `hidden beast` number, since 6 + 42 + 2 + 3 + 613 = 666.

It is an interprime number because it is at equal distance from previous prime (64223609) and next prime (64223617).

It is not a de Polignac number, because 64223613 - 2² = 64223609 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64223617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92598 + ... + 93288.

It is an arithmetic number, because the mean of its divisors is an integer number (4048200).

Almost surely, 2^64223613 is an apocalyptic number.

It is an amenable number.

64223613 is a deficient number, since it is larger than the sum of its proper divisors (32933187).

64223613 is a wasteful number, since it uses less digits than its factorization.

64223613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169 (or 1166 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 64223613 is about 8013.9636260717. The cubic root of 64223613 is about 400.4653189026.

Adding to 64223613 its reverse (31632246), we get a palindrome (95855859).

The spelling of 64223613 in words is "sixty-four million, two hundred twenty-three thousand, six hundred thirteen".